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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Weighted-Average Assumptions Used in Valuing Stock Options Granted to Employees [Table Text Block] | The following are the weighted-average assumptions used in valuing the stock options granted to employees for the years ended December 31, 2012, 2011 and 2010:
| 2012 |  | 2011 |  | 2010
Stock price volatility | 34 | % |  | 34 | % |  | 31 | %
Risk-free interest rate | 0.82 | % |  | 1.88 | % |  | 2.12 | %
Expected life (in years) | 4.89 |  |  | 4.97 |  |  | 4.84 |
Dividend rate | 0 | % |  | 0 | % |  | 0 | %
Forfeiture rate | 5.9 | % |  | 6.1 | % |  | 7.0 | %
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of the status of employee stock options as of December 31, 2012 and changes during the year then ended is presented below:
All Employee Options | Number of Shares (in thousands) |  | Weighted Average Exercise Price |  | Weighted Average Contractual Term |  | Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2012 | 6,527 |  |  | $ | 13.61 |  |  |  |  |
Granted | 593 |  |  | $ | 16.00 |  |  |  |  |
Exercised | (1,444 | ) |  | $ | 11.53 |  |  |  |  |
Forfeited | (82 | ) |  | $ | 18.90 |  |  |  |  |
Expired | (261 | ) |  | $ | 17.64 |  |  |  |  |
Outstanding at December 31, 2012 | 5,333 |  |  | $ | 14.16 |  |  | 4.09 |  | $ | 25,006 |
Exercisable at December 31, 2012 | 4,252 |  |  | $ | 13.18 |  |  | 2.91 |  | $ | 23,664 |
Vested and expected to vest at December 31, 2012 | 5,257 |  |  | $ | 14.12 |  |  | 4.01 |  | $ | 24,886 |
Schedule of Employee Stock Options and Restricted Stock Units [Table Text Block] | A summary of stock units as of December 31, 2012 and changes during the year are presented below:
Stock Units | Stock Units (in thousands) |  | Weighted Average Contractual Term |  | Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2012 | 5,651 |  |  |  |  |
Granted | 2,574 |  |  |  |  |
Vested | (831 | ) |  |  |  |
Forfeited | (473 | ) |  |  |  |
Outstanding at December 31, 2012 | 6,921 |  |  | 2.85 |  | $ | 125,602 |
Vested and expected to vest at December 31, 2012 | 5,732 |  |  | 2.74 |  | $ | 104,029 |
Schedule of Employee Service Share Based Compensation Allocation of Recognized Period Costs [Table Text Block] | Share-based compensation expense before taxes for the years ended December 31, 2012, 2011 and 2010 totaled approximately $25.4 million, $19.5 million and $13.6 million, respectively, as shown in the table below. No share-based compensation cost was capitalized in inventory in 2012, 2011 or 2010 as the amounts were not material. The excess tax benefit realized for the tax deductions of the share-based payment arrangements totaled $1.5 million, $4.2 million and $2.0 million, respectively, for the years ended December 31, 2012, 2011 and 2010.
Compensation Expense (in thousands) | 2012 |  | 2011 |  | 2010
Cost of sales | $ | 2,328 |  |  | $ | 1,672 |  |  | $ | 932 |
Research and development | 4,167 |  |  | 3,055 |  |  | 2,087 |
Sales and marketing | 6,123 |  |  | 4,285 |  |  | 2,885 |
General and administrative | 12,737 |  |  | 10,528 |  |  | 7,688 |
Share-based compensation expense | $ | 25,355 |  |  | $ | 19,540 |  |  | $ | 13,592 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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